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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef BASE_PREFS_VALUE_MAP_PREF_STORE_H_ | |
6 #define BASE_PREFS_VALUE_MAP_PREF_STORE_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include <map> | |
11 #include <string> | |
12 | |
13 #include "base/macros.h" | |
14 #include "base/observer_list.h" | |
15 #include "base/prefs/base_prefs_export.h" | |
16 #include "base/prefs/pref_value_map.h" | |
17 #include "base/prefs/writeable_pref_store.h" | |
18 | |
19 // A basic PrefStore implementation that uses a simple name-value map for | |
20 // storing the preference values. | |
21 class BASE_PREFS_EXPORT ValueMapPrefStore : public WriteablePrefStore { | |
22 public: | |
23 ValueMapPrefStore(); | |
24 | |
25 // PrefStore overrides: | |
26 bool GetValue(const std::string& key, | |
27 const base::Value** value) const override; | |
28 void AddObserver(PrefStore::Observer* observer) override; | |
29 void RemoveObserver(PrefStore::Observer* observer) override; | |
30 bool HasObservers() const override; | |
31 | |
32 // WriteablePrefStore overrides: | |
33 void SetValue(const std::string& key, | |
34 scoped_ptr<base::Value> value, | |
35 uint32_t flags) override; | |
36 void RemoveValue(const std::string& key, uint32_t flags) override; | |
37 bool GetMutableValue(const std::string& key, base::Value** value) override; | |
38 void ReportValueChanged(const std::string& key, uint32_t flags) override; | |
39 void SetValueSilently(const std::string& key, | |
40 scoped_ptr<base::Value> value, | |
41 uint32_t flags) override; | |
42 | |
43 protected: | |
44 ~ValueMapPrefStore() override; | |
45 | |
46 // Notify observers about the initialization completed event. | |
47 void NotifyInitializationCompleted(); | |
48 | |
49 private: | |
50 PrefValueMap prefs_; | |
51 | |
52 base::ObserverList<PrefStore::Observer, true> observers_; | |
53 | |
54 DISALLOW_COPY_AND_ASSIGN(ValueMapPrefStore); | |
55 }; | |
56 | |
57 #endif // BASE_PREFS_VALUE_MAP_PREF_STORE_H_ | |
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